Input Sensing Unit With Segmented Metal Patterns And Insulating Parts
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Solution Overview
Problem
Current input sensing units in display devices face challenges in reliability due to issues with signal line configurations and overlapping metal patterns, which affect the sensitivity and accuracy of touch input detection.
Innovation Solution
The input sensing unit incorporates specific configurations of signal lines with disconnected metal patterns and insulating parts, where metal patterns overlap spacing parts but not adjacent signal lines, and includes bent parts with predetermined curvature, enhancing reliability and sensitivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If metal patterns of signal lines are arranged closely to improve space utilization, then device area is reduced, but short circuit risk increases
Solution Approach 1:
An insulating part is introduced as an intermediary element between adjacent metal patterns of signal lines. This insulating part prevents direct contact between metal patterns that would cause short circuits, while allowing the metal patterns to be arranged closely for space efficiency. The insulating part acts as a mediator that enables close spacing without compromising electrical isolation.
Solution Approach 2:
The signal line structure is segmented into disconnected metal patterns rather than continuous conductors. By dividing the signal line into separate metal pattern segments and using an insulating part to bridge them, the design achieves both close spacing and electrical isolation, reducing short circuit risk while maintaining compact area.
2Area of stationary object
If metal patterns of adjacent signal lines overlap to reduce space, then area is reduced, but signal interference increases
Solution Approach 1:
The insulating part serves as a mediator between metal patterns of adjacent signal lines, allowing them to overlap in the planar view while preventing direct electrical contact. This enables space reduction through overlapping arrangement while the insulating part blocks capacitive coupling and signal interference between adjacent lines.
3Reliability
If signal lines are made continuous to improve electrical connectivity, then conductivity is improved, but manufacturing complexity increases
Solution Approach 1:
The signal line is deliberately segmented into disconnected metal patterns rather than formed as a continuous conductor. Each metal pattern can be independently manufactured and positioned, then connected through insulating parts, which simplifies the manufacturing process compared to forming precise continuous traces through complex routing.
Data Source
AI summary
An input sensing unit designed to make it possible to prevent a failure due to a foreign substance, and a display device having the input sensing unit.